Autistic people often feel very tired. One reason why an autistic person might feel tired is because they have accumulated an ‘energy debt’.
When a person has an ‘energy debt’, it means that they have not had a chance to recover from the stresses and strains of daily life. Autism means that it is more difficult for the person with the condition to do ‘normal’ activities and to interact with the world around them. This means that normal day to day activities can be overwhelming. The person might always feel as though they are at – or near to – their energy threshold.